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Finding the Fourth Proportional to 72,593.46, 100,135.53 and 45,689.26

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Solution

The fourth proportional to 72,593.46, 100,135.53 and 45,689.26 is: 63,023.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,593.46 : 100,135.53 = 45,689.26 : x
  2. Step 2: Convert to fraction form
    72,593.46/100,135.53 = 45,689.26/x
  3. Step 3: Cross multiply
    72,593.46x = 100,135.53 × 45,689.26
  4. Step 4: Simplify right side
    72,593.46x = 4,575,117,536.28
  5. Step 5: Solve for x
    x = 4,575,117,536.28/72,593.46
  6. Step 6: Final answer
    x = 63,023.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.